Parking Brakes; Regeneration Switch; Park Brake Interlocks; Normal Park Brake Operation - MCi J4500 Operator's Manual

Regeneration Switch

The regeneration toggle switch is located in the
rear, side service compartment.
To avoid serious personal injury or property
damage, ensure that no persons or objects
are at or within two feet of the exhaust outlet
at any time during a regeneration. Ensure that
exhaust and outlet are clear of any trash,
grasses, or other vegetation or debris.
Use extreme caution during a stationary
regeneration, as exhaust gas tail pipe outlet
temperatures can exceed 900 degrees F ( 482
degrees C ). Stationary regenerations are to
be performed outdoors only.
DO NOT leave the coach unattended during a
stationary regeneration.
DO NOT perform inside a garage or
maintenance facility.
DO NOT attach an exhaust extraction hose to
the exhaust outlet.
Figure 18. Regen Switch

Park Brake Interlocks

The parking brake is interlocked with and affects
the operation of kneeling and wcl as follows:
• Kneeling - The park brake must be applied
to kneel. Releasing the park brake cancels
kneeling and returns the coach to normal ride
height.
• Wheelchair Lift - The park brake is
interlocked by the wheelchair lift key switch. The park
brake must be set before turning the wheelchair lift
master key switch on. Opening the wheelchair lift doors
also sets the parking brake.
June 2016

PARKING BRAKES

The coach has air-release spring activated parking
brakes. The Parking Brake control is a black, button
located under the LH switch panel.
Do not leave the coach without applying the
parking brake.
Figure 19. Parking Brake Knob

Normal Park Brake Operation

1. Stop the coach, put the transmission in neutral.
2. Pull the park brake knob out ( Figure 19 ) to set
the park brake. The valve will latch in this
position.
3. Ensure that the air pressure gauge shows 100
psi (689 Pa) or more.
4. Push the park brake knob fully in to release the
brakes. The valve will latch in this position.
Emergency Park Brake Release
In an emergency, where there is no pressure or
low pressure in the air system, the parking brake can
be released by pushing and holding down the
Emergency Park Brake Release.
The park brake emergency release air tank
has only enough air to release the parking
brake three times.
The Emergency Park Brake Release is a green,
circular button located on the lower LH console switch
panel ( Figure 20 ).
Figure 20. Emergency Park Brake Release
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